    header{
        width: 100%;
        height: 100px;
    }
    .gray{
        border: 5px solid #f8f8f8;
    }
    .c1{
    width: 250px;
    height: 100px;
}
        .c2{
    width: 15px;
    height: 15px;
    color: red;
}
        a{
    color: red;
}
        .c3{
    margin-left:1300px;
    margin-top: -60px;
}
        .c4{
    text-align: center;
    margin-top: 200px;
}
        .t{
    width: 340px;
    height: 50px;
    margin-top: 30px;
    background-color: white;
}
        .y{
    width: 340px;
    height: 50px;
    margin-top: 50px;
    background-color: red;
    border: none;
}
        .c5{
    margin-top: 80px;
}
        .c6{
    color: blue;
    margin-left: 350px;
}
        .c7{
    color: blue;
}
        .zhong{
    width:60px ;
    height: 50px;
}
        .jian{
    width:280px ;
    height: 50px;
    color:gray;
}